superfluous TEST instruction

[Florian Weimer]

* Vladimir Kozlov:

> It was filed before we start work in open.
> Anyway, currently it is not the problem since new x86 cpus fuse
> test+jcc instructions into one so there is no performance loss,
> only code size is affected.

I don't think Core 2s/pre-Nehalem Xeons perform this type of fusion in
64 bit mode, only in 32 bit mode.

-- 
Florian Weimer                <fweimer at bfk.de>
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